The caller provides context and modifies the behavior of get_user_pages() via flags. Of particular interest is the FOLL_FORCE flag, which mem_rw() passes. This flag causes check_vma_flags (the access validation logic within get_user_pages()) to ignore writes to unwritable pages and allow the lookup to continue. The “punch through” semantics are attributed entirely to FOLL_FORCE. (comments my own)
goals of the 1.3 development cycle was to begin focusing on，这一点在新收录的资料中也有详细论述
#[wasm_bindgen]。新收录的资料对此有专业解读
[1]《对话淘宝姜宇宁：如果你只推低价商品，是不需要用大语言模型的》，新浪财经